Cookham Wood HM YOI The Substance Misuse Service is optional and available to all offenders during their stay at Cookham Wood. We provide one-to-one assessments and develop a personalised care plan with each offender according to their needs. Offenders are encouraged to meet with their worker on a regular basis to track progress on their plan, to listen their views and impressions of our services and how they might be improved. When the time comes to finish treatment or for those who are preparing to leave Cookham Wood, we will discuss with them their on-going needs. We then make links with local services and help them get access and support once they have left. Read our Cookham Wood advice brochure.